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Low cost and long-focal-depth metallic axicon for terahertz frequencies based on parallel-plate-waveguides
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Hernandez-Serrano, Arturo I. and MacPherson, Emma (2021) Low cost and long-focal-depth metallic axicon for terahertz frequencies based on parallel-plate-waveguides. Scientific Reports, 11 . 3005. doi:10.1038/s41598-021-82503-x
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Official URL: https://doi.org/10.1038/s41598-021-82503-x
Abstract
In this work we demonstrate a triangular surface lens (axicon) operating at frequencies between 350 and 450 GHz using parallel-plate-waveguide technology. The proposed axicon offers longer focal depth characteristics compared to conventional plastic lenses, surpassing common TPX lenses by one order of magnitude. Additionally, due to the triangular surface of the axicon, this device is able to focus THz radiation onto smaller areas than TPX lenses, enhancing the resolution characteristics of THz imaging systems. The frequency range of operation of the proposed axicon can be easily tuned by changing the space between plates, making this approach a very attractive candidate for low-cost, robust and easy to assemble solutions for the next generation of active THz devices.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > Physics | |||||||||
| Library of Congress Subject Headings (LCSH): | Terahertz spectroscopy , Parallel-plate waveguides , Submillimeter waves | |||||||||
| Journal or Publication Title: | Scientific Reports | |||||||||
| Publisher: | Nature Publishing Group | |||||||||
| ISSN: | 2045-2322 | |||||||||
| Official Date: | 4 February 2021 | |||||||||
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| Volume: | 11 | |||||||||
| Article Number: | 3005 | |||||||||
| DOI: | 10.1038/s41598-021-82503-x | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Open Access | |||||||||
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